1066645506 has 8 divisors (see below), whose sum is σ = 2133291024. Its totient is φ = 355548500.

The previous prime is 1066645477. The next prime is 1066645507. The reversal of 1066645506 is 6055466601.

1066645506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

1066645506 is an admirable number.

It is a super-2 number, since 2×1066645506² = 2275465270939992072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066645507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88887120 + ... + 88887131.

It is an arithmetic number, because the mean of its divisors is an integer number (266661378).

Almost surely, 2^1066645506 is an apocalyptic number.

1066645506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066645506 is a wasteful number, since it uses less digits than its factorization.

1066645506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177774256.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 1066645506 is about 32659.5392802777. The cubic root of 1066645506 is about 1021.7391533057.

The spelling of 1066645506 in words is "one billion, sixty-six million, six hundred forty-five thousand, five hundred six".